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New temporary internal introducer shunt for brain perfusion during total endovascular arch replacement with in situ fenestration technique.

Complete endovascular arch replacement by in situ fenestration technique requires maintenance of cerebral perfusion during the fenestration procedure by an extracorporeal femoral-carotid bypass. The bypass has the disadvantages of being invasive, requiring a pump and shunting blood extracorporeally. This report describes bench testing and an in vivo experimental animal setup with an endovascular,

Hypertension and genome-wide association studies: combining high fidelity phenotyping and hypercontrols.

Among the common complex diseases, hypertension has been particularly unlucky in the recent surge of positive results from genome-wide association studies. We summarize the evidence that would support continuing the effort in the hunt for a genetic basis for hypertension. The problems facing the genetic studies for hypertension are not unique, but phenotypic characterization, heterogeneity and hig

Changes to a Municipal Workplace

Det är en recension av en bok som handlar om omvandlingen av Köpenhamns elverk från kommunalt affärsverk till konkurrensutsatt bolag verksamt inom EU. En viktig aspekt är de anställdas anpassning till denna förändring.

Inventory control in environments with short lead times

Methods currently used for inventory control in industry are with few exceptions developed more than forty years ago. This is for instance the case with methods like reorder point sys-tems, cover-time planning and material requirements planning (MRP). Lead times at that time were typically several weeks and months and order quantities covered typically de-mand over several months. Since then both

Multivariate and Multiscale Monitoring of Wastewater Treatment Operation

In this work extensions to principal component analysis (PCA) for wastewater treatment (WWT) process monitoring are discussed. Conventional PCA has some limitations when used for WWT monitoring. Firstly, PCA assumes that data are stationary, which is normally not the case in WWT monitoring. Secondly, PCA is most suitable for monitoring data that display events in one time-scale. However, in WWT op

Constraint Programming Methods for Optimization of Single Shortest Path Routing

In this thesis, we propose methods based on constraint programming (CP) for solving an optimization problem in telecommunications, the single shortest path routing problem. The problem is to find optimal values for a set of routing configuration parameters in a shortest path routing protocol, for a given network. With optimal parameters, traffic is routed through the network in a way which is opti

Oscillator-strengths For Resonance Transitions In Neutral Selenium and Tellurium Derived From Time-resolved Laser Spectroscopy

We have measured radiative lifetimes for selenium and tellurium resonance levels by using short pulse laser excitation in differentially heated resonance cells. We obtained tau(3S1 Se I) = 2.9(5) ns and tau(3S1 Te I) = 3.1(5) ns, which together with branching ratio values given by Ubelis and Berzinsh yield the absorption oscillator strength f(abs)(Se I, 196.0 nm) = 0.074(16) and f(abs)(Te I, 214.3

Physical limitations on the scattering of electromagnetic vector spherical waves

Understanding the interaction between electromagnetic waves and matter is vital in applications ranging from classical optics to antenna theory. This paper derives physical limitations on the scattering of electromagnetic vector spherical waves. The assumptions made are that the heterogeneous scatterer is passive, and has constitutive relations which are on convolution form in the time domain and